E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > DYNO TEST OUTCOME at TECHNIK: Tech details, VIDEO, etc.



Reply
 
Thread Tools Search this Thread
      06-22-2006, 07:05 PM   #89
ksfrogman
Major General
ksfrogman's Avatar
United_States
570
Rep
6,750
Posts

Drives: E90 330i 6MT
Join Date: Nov 2005
Location: Torrance, CA

iTrader: (12)

Garage List
2006 330i  [0.00]
2006 330i  [0.00]
Quote:
Originally Posted by ADHD
Shit my cells were hiding when I posted the question! DUHH post means after

Very curius to see the 325step results?????
Unfortunately, no 325i Step owners dyno'd their cars that day. We had two 330i 6MT, three 330i Steps, two 325i 6MTs and one S2000 Honda--a total of 8 cars tested plus the guy with the e46 M3.
__________________
Appreciate 0
      08-16-2006, 02:32 PM   #90
ksfrogman
Major General
ksfrogman's Avatar
United_States
570
Rep
6,750
Posts

Drives: E90 330i 6MT
Join Date: Nov 2005
Location: Torrance, CA

iTrader: (12)

Garage List
2006 330i  [0.00]
2006 330i  [0.00]
I just found this dyno of an E90 325i 6MT posted on another website forum.

Something looks amiss here, because that 325i is posting figures just under what our 330i's performed at. However, keep in mind that our dynos were done under different run conditions:

87.94 degrees F compared with 59.47 degrees F, and 35% vs 24% humidity.
Attached Images
   
__________________
Appreciate 0
      08-16-2006, 05:17 PM   #91
technik330
Captain
289
Rep
666
Posts

Drives: STi
Join Date: Aug 2006
Location: Orange County

iTrader: (0)

^

Nice
Appreciate 0
      08-16-2006, 10:04 PM   #92
Asiann
Got Seoul?
United_States
114
Rep
2,862
Posts

Drives: 2012 535i MSport
Join Date: Dec 2005
Location: Honolulu

iTrader: (0)

Garage List
2012 BMW 535i  [0.00]
2008 750Li  [0.00]
2006 BMW  [0.00]
Just some more info on Dynos.

Typically, a Dynojet dynamometer will record a "loss" of 15-18% for manual drivetrains, and 22-25% for automatic drivetrains. The Dynojet dynos are passive rolling load type dynamometers, so the vehicle is tested while accelerating. Some additional energy is lost accelerating the engine and drivetrain components themselves, so there is not really this much "loss", but that is for another technical discussion. If you have ever wondered why manual transmission equipped cars are generally faster than their automatic counterparts, the difference in drivetrain efficiency is a big part of that, along with the fact that manuals tend to have an extra gear with more aggressive ratios than automatic transmissions. Here is a very good article about the Dynos and also how tire and wheel sizes/weight can make a difference. http://www.maxima.org/shoptalk/sub_r...ns/index.shtml
__________________
Can you say Alooooha?
[SIGPIC][/SIGPIC]
Appreciate 0
      08-17-2006, 03:45 AM   #93
aarnt
Private
1
Rep
72
Posts

Drives: BMW E90 320i
Join Date: Jun 2005
Location: Greece

iTrader: (0)

Quote:
Originally Posted by Asiann
Just some more info on Dynos.

Typically, a Dynojet dynamometer will record a "loss" of 15-18% for manual drivetrains, and 22-25% for automatic drivetrains. The Dynojet dynos are passive rolling load type dynamometers, so the vehicle is tested while accelerating. Some additional energy is lost accelerating the engine and drivetrain components themselves, so there is not really this much "loss", but that is for another technical discussion. If you have ever wondered why manual transmission equipped cars are generally faster than their automatic counterparts, the difference in drivetrain efficiency is a big part of that, along with the fact that manuals tend to have an extra gear with more aggressive ratios than automatic transmissions. Here is a very good article about the Dynos and also how tire and wheel sizes/weight can make a difference. http://www.maxima.org/shoptalk/sub_r...ns/index.shtml
Amazing info... thanx!
Appreciate 0
      08-21-2006, 01:25 PM   #94
technik330
Captain
289
Rep
666
Posts

Drives: STi
Join Date: Aug 2006
Location: Orange County

iTrader: (0)

Quote:
Originally Posted by Asiann
Just some more info on Dynos.

Typically, a Dynojet dynamometer will record a "loss" of 15-18% for manual drivetrains, and 22-25% for automatic drivetrains. The Dynojet dynos are passive rolling load type dynamometers, so the vehicle is tested while accelerating. Some additional energy is lost accelerating the engine and drivetrain components themselves, so there is not really this much "loss", but that is for another technical discussion. If you have ever wondered why manual transmission equipped cars are generally faster than their automatic counterparts, the difference in drivetrain efficiency is a big part of that, along with the fact that manuals tend to have an extra gear with more aggressive ratios than automatic transmissions. Here is a very good article about the Dynos and also how tire and wheel sizes/weight can make a difference. http://www.maxima.org/shoptalk/sub_r...ns/index.shtml

thanks, that's actually really good info!
Appreciate 0
      09-08-2006, 01:40 AM   #95
ksfrogman
Major General
ksfrogman's Avatar
United_States
570
Rep
6,750
Posts

Drives: E90 330i 6MT
Join Date: Nov 2005
Location: Torrance, CA

iTrader: (12)

Garage List
2006 330i  [0.00]
2006 330i  [0.00]
ADHD's dyno added to collection for comparison. Just note this was done on a different day.
__________________
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 11:43 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST